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Seasonality & Trend

Inside this lesson
  • Decompose a forecast into a trend baseline and a seasonal index.
  • Explain why seasonal indices must average to 1.0 across a full cycle.
  • Compute a period forecast as the baseline times that period index.

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Educational content only. This course explains budgeting, forecasting, and FP&A concepts and the math behind them; it is not financial, accounting, investment, or professional certification advice, makes no recommendations, and predicts no revenue, cost, cash, or business outcomes. All figures are illustrative synthetic teaching examples. Consult a qualified professional before making financial or business decisions.